| Title: | Elevated carbon dioxide increases salicylic acid in Glycine max |
| Author(s): | Casteel CL; Segal LM; Niziolek OK; Berenbaum MR; DeLucia EH; |
| Address: | "Department of Plant Biology University of Illinois, Urbana-Champaign, IL 61820, USA" |
| ISSN/ISBN: | 1938-2936 (Electronic) 0046-225X (Linking) |
| Abstract: | "Concentrations of carbon dioxide (CO(2)) are increasing in the atmosphere, affecting soybean (Glycine max L.) phytohormone signaling and herbivore resistance. Whether the impact of elevated CO(2) on phytohormones and induced defenses is a generalized response within this species is an open question. We examined jasmonic acid (JA) and salicylic acid (SA) under ambient and elevated CO(2) concentrations with and without Japanese beetle (Popillia japonica Newman) damage and artificial damage across six soybean cultivars (HS93-4118, Pana, IA 3010, Loda, LN97-15076, and Dwight). Elevated CO(2) reduced constitutive levels of JA and related transcripts in some but not all soybean cultivars. In contrast to the variation in JA, constitutive levels of salicylic were increased universally among soybean cultivars grown under elevated CO(2). Variation in hormonal signaling may underpin observed variation in the response of insect herbivores and pathogens to plants grown under elevated CO(2)" |
| Keywords: | "Animals Carbon Dioxide/*pharmacology Climate Change Coleoptera/*physiology Cyclopentanes/metabolism Gene Expression Regulation, Plant Herbivory Kinetics Oxylipins/metabolism Salicylic Acid/*metabolism Signal Transduction Soybeans/*drug effects/genetics/me;" |
| Notes: | "MedlineCasteel, Clare L Segal, Lauren M Niziolek, Olivia K Berenbaum, May R DeLucia, Evan H eng Research Support, U.S. Gov't, Non-P.H.S. England 2013/01/17 Environ Entomol. 2012 Dec; 41(6):1435-42. doi: 10.1603/EN12196" |
